diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-03-16 20:40:25 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-03-21 22:05:57 +0000 |
| commit | 268099e3ccca5a988632ce18abd21d809d632ddc (patch) | |
| tree | eb060cc006e441742b1035d1a69e4d2d79e83e22 /include/asm-arm/hardware | |
| parent | 22398f57b6372f3150f9ebb4b6d0aa4bf98c5dfb (diff) | |
[ARM] Collect 8250-based debug implementations together
Several ARM machine implementations used an 8250 compatible port for
debugging purposes, and indepdently implemented the low level debug
macros every time. Provide a common implementation and convert these
implementations to use this version.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/hardware')
| -rw-r--r-- | include/asm-arm/hardware/debug-8250.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/asm-arm/hardware/debug-8250.S b/include/asm-arm/hardware/debug-8250.S new file mode 100644 index 00000000000..4594fea91ec --- /dev/null +++ b/include/asm-arm/hardware/debug-8250.S @@ -0,0 +1,29 @@ +/* + * linux/include/asm-arm/hardware/debug-8250.h + * + * Copyright (C) 1994-1999 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/serial_reg.h> + + .macro senduart,rd,rx + strb \rd, [\rx, #UART_TX << UART_SHIFT] + .endm + + .macro busyuart,rd,rx +1002: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT] + and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE + teq \rd, #UART_LSR_TEMT | UART_LSR_THRE + bne 1002b + .endm + + .macro waituart,rd,rx +#ifdef FLOW_CONTROL +1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT] + tst \rd, #UART_MSR_CTS + beq 1001b +#endif + .endm |